41. As a _____ actor, he can perform, sing, dance and play several kinds of musical instruments.

A. flexible

B. versatile

C. sophisticated

D. productive

42. As a salesman, he works on a (an) _____ basis, taking 10% of everything he sells.

A. income

B. commission

C. salary

D. pension

43. As an excellent shooter, Peter practiced aiming at both _____ targets and moving targets.

A. stationary

B. standing

C. stable

D. still

44. As teachers we should concern ourselves with what is said, not what we think _____.

A. ought to be said

B. must say

C. have to be said

D. need to say

45. As the plane was getting ready to take off, we all _____ our seat belt.

A. tied

B. locked

C. fastened

D. closed